U.S. patent application number 14/976054 was filed with the patent office on 2016-08-18 for chassis and electronic device.
This patent application is currently assigned to FUJITSU LIMITED. The applicant listed for this patent is FUJITSU LIMITED. Invention is credited to Sonomasa Kobayashi, Akio Yoshida, Hiroki Yoshida.
Application Number | 20160238874 14/976054 |
Document ID | / |
Family ID | 56621133 |
Filed Date | 2016-08-18 |
United States Patent
Application |
20160238874 |
Kind Code |
A1 |
Yoshida; Hiroki ; et
al. |
August 18, 2016 |
CHASSIS AND ELECTRONIC DEVICE
Abstract
A first inner cover includes a plate portion that includes a
first surface that is opposed to the back surface of a liquid
crystal unit; and a second surface that is the surface at the
opposite side of the first surface. The plate portion includes a
boss that extends from the second surface in the thickness
direction of the plate portion. Furthermore, the plate portion
includes a recessed portion that has a predetermined area of the
first surface recessed, including an area at the opposite side of
the boss.
Inventors: |
Yoshida; Hiroki; (Kawasaki,
JP) ; Yoshida; Akio; (Kawasaki, JP) ;
Kobayashi; Sonomasa; (Kawasaki, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
FUJITSU LIMITED |
Kawasaki-shi |
|
JP |
|
|
Assignee: |
FUJITSU LIMITED
Kawasaki-shi
JP
|
Family ID: |
56621133 |
Appl. No.: |
14/976054 |
Filed: |
December 21, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F 2001/133314
20130101; G02F 1/133308 20130101; G02F 2001/133322 20130101 |
International
Class: |
G02F 1/1333 20060101
G02F001/1333 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 17, 2015 |
JP |
2015-028876 |
Claims
1. A chassis comprising a plate portion, wherein the plate portion
includes a first surface that is opposed to a back surface of a
liquid crystal unit; a second surface that is a surface at an
opposite side of the first surface; a protruding portion that
extends from the second surface in a direction away from the back
surface of the liquid crystal unit and in a thickness direction of
the plate portion; and a recessed portion that has a predetermined
area of the first surface recessed, including an area of the first
surface at an opposite side of the protruding portion.
2. The chassis according to claim 1, wherein, in the recessed
portion, the area of the first surface at the opposite side of the
protruding portion is located in a center of the predetermined
area.
3. The chassis according to claim 1, wherein the recessed portion
is circular.
4. The chassis according to claim 1, wherein the recessed portion
is more flexible than other areas of the plate portion.
5. The chassis according to claim 4, wherein the recessed portion
includes a slope face and a bottom face to form a recess and is
easily bent by providing a cutout at a position where the slope
face is included.
6. The chassis according to claim 1, wherein the protruding portion
is a boss that includes a screw hole.
7. The chassis according to claim 1, wherein the protruding portion
is located at an area other than vicinity of an outer edge of the
back surface of the liquid crystal unit.
8. An electronic device comprising a liquid crystal unit, a
substrate, and a chassis, wherein the chassis includes a plate
portion that is sandwiched between the liquid crystal unit and the
substrate and that includes a first surface that is opposed to a
back surface of the liquid crystal unit and a second surface that
is a surface at an opposite side of the first surface and that is
opposed to the substrate; a protruding portion that extends from
the second surface in a direction away from the back surface of the
liquid crystal unit and in a thickness direction of the plate
portion; and a recessed portion that has an area of the first
surface recessed, including an area of the first surface at an
opposite side of the protruding portion.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is based upon and claims the benefit of
priority of the prior Japanese Patent Application No. 2015-028876,
filed on Feb. 17, 2015, the entire contents of which are
incorporated herein by reference.
FIELD
[0002] The embodiment discussed herein is directed to a chassis and
an electronic device.
BACKGROUND
[0003] In recent years, portable electronic devices have become
widely used, typically, notebook personal computers (PCs), tablet
PCs, mobile phones, and smartphones. With regard to the portable
electronic devices, there are high market demands for thin and
lightweight products. For this reason, there are also high demands
for electronic device chassis, which constitute a portable
electronic device, to have thinness and lightweight properties and
to have satisfying high rigidity in terms of protection for
internal electronic components.
[0004] Typically, the chassis of a portable electronic device is
formed by injection molding of synthetic resin. Furthermore, to
provide the portable electronic device with rigidity, a structure
component, such as a boss or rib, is formed within the chassis.
[0005] Furthermore, in portable electronic devices, a liquid
crystal unit is often used as a display mechanism. Moreover, in
portable electronic devices, to make the device thin, a boss is
sometimes provided for screw fastening to fix a substrate or a unit
on the back surface of the liquid crystal unit.
[0006] It is considered that, when an external force is applied to
the chassis due to drop impact, pressing, or the like, a structure
component, such as a boss, is brought into contact with the back
surface of the liquid crystal unit. Display control mechanisms,
such as an array substrate or a light guide plate, are provided on
the back surface of the liquid crystal unit, and there is a
possibility that the contact between the structure component and
the back surface of the liquid crystal unit causes display failure
or damage to the liquid crystal unit.
[0007] Conventionally, to prevent the occurrence of the above
failure, a buffer material, such as rubber, is provided between the
liquid crystal unit and the boss so that the force is distributed.
Furthermore, there is a conventional technology in which, to change
the view angle while the liquid crystal unit is held, a spherical
member is fixed to the back surface of the liquid crystal unit, and
the spherical member is fixed to a shaft screw via a tension
spring. Moreover, there is a conventional technology in which the
chassis, which houses a backlight unit in a liquid crystal layer,
is provided with concavity and convexity so that the liquid crystal
layer is sandwiched.
[0008] Patent Literature 1: Japanese Laid-open Patent Publication
No. 5-341718
[0009] Patent Literature 2: Japanese Laid-open Patent Publication
No. 2005-121929
[0010] However, according to the conventional technology for
providing the buffer material, there is a possibility that, if the
existing gap is filled with the buffer material, the impact is
easily transmitted due to the pressure that is applied to the boss,
and it is difficult to prevent the occurrence of failure of the
liquid crystal unit. Furthermore, according to the conventional
technology for using the spherical member, the spherical member is
a mechanism that holds the liquid crystal unit in a movable state,
and it is large-sized as it includes various components; therefore,
in thin portable electronic devices, it is difficult to reduce the
pressure that is applied to the boss. Moreover, according to the
conventional technology for providing the chassis, which houses the
backlight unit, with concavity and convexity, it is difficult to
reduce the pressure to the structure component that is provided on
the cover that spreads over the liquid crystal unit, and it is
difficult to prevent the occurrence of failure of the liquid
crystal unit.
SUMMARY
[0011] According to an aspect of an embodiment, a chassis includes
a plate portion. The plate portion includes: a first surface that
is opposed to a back surface of a liquid crystal unit; a second
surface that is a surface at an opposite side of the first surface;
a protruding portion that extends from the second surface in a
direction away from the back surface of the liquid crystal unit and
in a thickness direction of the plate portion; and a recessed
portion that has a predetermined area of the first surface
recessed, including an area of the first surface at an opposite
side of the protruding portion.
[0012] The object and advantages of the invention will be realized
and attained by means of the elements and combinations particularly
pointed out in the claims.
[0013] It is to be understood that both the foregoing general
description and the following detailed description are exemplary
and explanatory and are not restrictive of the invention, as
claimed.
BRIEF DESCRIPTION OF DRAWINGS
[0014] FIG. 1A is a perspective view of a tablet-type PC when seen
from the side of a liquid crystal screen according to an
embodiment;
[0015] FIG. 1B is a perspective view of the tablet-type PC when
seen from the side of an external cover according to the
embodiment;
[0016] FIG. 2A is a perspective view of the tablet-type PC in an
exploded state according to the embodiment;
[0017] FIG. 2B is a perspective view where, in the exploded state,
a liquid crystal unit, a first inner cover, a substrate, and a
second inner cover are removed;
[0018] FIG. 3A is a perspective view of the first inner cover when
seen from the side of the liquid crystal unit;
[0019] FIG. 3B is a perspective view of the first inner cover when
seen from the side of the substrate;
[0020] FIG. 4A is a plan view of a recessed portion;
[0021] FIG. 4B is a perspective view of the recessed portion;
[0022] FIG. 5 is a perspective view of a boss;
[0023] FIG. 6 is an enlarged view of a boss section, taken along
the line A-A' in FIG. 1A;
[0024] FIG. 7 is an enlarged view of the boss section, taken along
the line A-A' in FIG. 1A in a state where the pressing force is
applied;
[0025] FIG. 8A is a diagram that illustrates another example of the
cutout; and
[0026] FIG. 8B is a diagram that illustrates another example of the
cutout.
DESCRIPTION OF EMBODIMENTS
[0027] Preferred embodiments of the present invention will be
explained with reference to accompanying drawings. Here, the
chassis and the electronic device, disclosed in the present
application, are not limited to the following embodiment.
[0028] FIG. 1A is a perspective view of a tablet-type PC when seen
from the side of the liquid crystal screen according to an
embodiment. FIG. 1B is a perspective view of the tablet-type PC
when seen from the side of the external cover according to the
embodiment. Furthermore, FIG. 2A is a perspective view of the
tablet-type PC in an exploded state according to the embodiment.
Furthermore, FIG. 2B is a perspective view where, in the exploded
state, a liquid crystal unit, a first inner cover, a substrate, and
a second inner cover are removed. Furthermore, FIG. 3A is a
perspective view of the first inner cover when seen from the side
of the liquid crystal unit. FIG. 3B is a perspective view of the
first inner cover when seen from the side of the substrate.
[0029] With reference to FIG. 1A to FIG. 3B, an explanation is
given of the schematic configuration of a tablet-type PC 1 in
entirety. As illustrated in FIGS. 1A and 1B, the tablet-type PC 1
includes a surface at the side of a touch panel 11 and a surface at
the side of an external cover 16, which is at the opposite side of
the touch panel 11. Hereafter, the surface at the side of the touch
panel 11 is sometimes referred to as the "front surface", and the
surface at the side of the external cover 16 as the "back
surface".
[0030] Furthermore, if the tablet-type PC 1 is disassembled, the
state is obtained as illustrated in FIGS. 2A to 3B. As illustrated
in FIGS. 2A and 2B, the tablet-type PC 1 includes the touch panel
11, a liquid crystal unit 12, a first inner cover 13, a substrate
14, a second inner cover 15, and an external cover 16.
[0031] The touch panel 11 is provided on the liquid crystal screen
of the liquid crystal unit 12. In the following explanation, the
display screen of the liquid crystal unit 12 is referred to as the
liquid crystal screen.
[0032] The liquid crystal unit 12 includes a display control
mechanism, such as a polarization plate, an array substrate, or a
light guide plate, or the like, in addition to a liquid crystal
layer.
[0033] As illustrated in FIG. 2B, the first inner cover 13, the
substrate 14, and the second inner cover are provided on the back
surface of the liquid crystal unit 12, i.e., on the surface at the
opposite side of the display screen.
[0034] The first inner cover 13 includes a frame into which the
liquid crystal unit 12 is fitted, and it nips the liquid crystal
unit 12 that is fitted in the frame. Furthermore, the substrate 14
is provided on the back surface of the first inner cover 13, i.e.,
on the surface at the opposite side of the liquid crystal unit 12.
Moreover, the second inner cover 15 is provided on the back surface
of the substrate 14, i.e., on the surface at the opposite side of
the first inner cover 13.
[0035] As illustrated in FIGS. 3A and 3B, the first inner cover 13
includes recessed portions 131 and 132. Furthermore, the first
inner cover 13 includes a boss 133 at the opposite side of the
recessed portion 131, i.e., at the side of the substrate 14, and
includes a boss 134 at the opposite side of the recessed portion
132. A plate portion 130 is a plate-like portion that is provided
with the recessed portions 131 and 132 and the bosses 133 and 134
on the first inner cover 13 and that is opposed to the liquid
crystal unit 12 and the substrate 14. The details of the structure
of the first inner cover 13 are explained later.
[0036] The substrate 14 includes, for example, a central processing
unit (CPU), a memory, and an interface for a hard disk and an
external device. Furthermore, the CPU on the substrate 14 is
connected to the touch panel 11 and the liquid crystal unit 12. The
CPU receives operation information that is input from the touch
panel 11 and performs an operation in accordance with the received
operation information. Then, on the basis of the details of the
operation, the CPU causes the liquid crystal screen of the liquid
crystal unit 12 to display the information.
[0037] The substrate 14 is sandwiched between the first inner cover
13 and the second inner cover 15 so that it is secured. Here, the
substrate 14 is fastened by a screw that is inserted from the side
of the second inner cover 15.
[0038] More specifically, the first inner cover 13 and the second
inner cover 15 are fastened with screws at the positions of the
bosses 133 and 134. The screws are engaged with screw holes 103
that are provided in the bosses 133 and 134 so that the first inner
cover 13 and the second inner cover 15 are fastened and the
substrate 14 is fixed. Furthermore, the first inner cover 13 and
the second inner cover 15 are fastened with multiple screws at the
areas along the vicinity of the edge portions of the liquid crystal
unit 12. For the screw fastening areas, bosses may be provided on
the back surface of the first inner cover 13.
[0039] The external cover 16 is provided on the back surface of the
second inner cover 15, i.e., at the opposite side of the substrate
14. The external cover 16 and the second inner cover 15 are
fastened due to the engagement between a claw and a claw hole, or
the like.
[0040] The external cover 16 is a cover that spreads over the
surface at the opposite side of the liquid crystal screen of the
tablet-type PC 1 to improve the external appearance and to protect
the internal mechanisms, such as the liquid crystal unit 12 or the
substrate 14.
[0041] The first inner cover or the combination of the first inner
cover, the second inner cover, and the external cover is an example
of the "chassis".
[0042] Next, a more detailed explanation is given of the structure
of the first inner cover 13. FIG. 4A is a plan view of the recessed
portion. Furthermore, FIG. 4B is a perspective view of the recessed
portion. The recessed portion 131 is the portion that corresponds
to the inner side of the area which is indicated in FIG. 4A. Here,
the recessed portion 131 and the boss 133 have the same structure
as the recessed portion 132 and the boss 134; therefore, an
explanation is given by using the recessed portion 131 and the boss
133 as an example.
[0043] As illustrated in FIG. 4A, the recessed portion 131 includes
a slope face 101, represented by multiple circles, a bottom face
102, the screw hole 103, and a cutout 104. For easy understanding,
the recessed portion 131 is illustrated by indicating the area of
the recessed portion 131 in FIG. 4. Furthermore, as illustrated in
FIGS. 4A and 4B, the slope face 101 has a slope that is recessed
toward the back surface, i.e., that is recessed deeply in a
direction away from the liquid crystal unit 12. Furthermore, the
recessed portion 131 does not have any slope when it reaches the
bottom face 102 so that it becomes a plain face. Moreover, the
screw hole 103 is provided in the center of the bottom face 102.
The screw hole 103 is a through-hole, and it is the screw hole that
is provided on the boss 133.
[0044] Furthermore, in the recessed portion 131 according to the
present embodiment, the cutout 104 is provided at the position
where the slope face 101 is included. Here, as described later, the
recessed portion 131 receives a pressing force from the boss 133.
At that time, the slope face 101 is bent, whereby the recessed
portion 131 acts to reduce the pressing force. Therefore, it is
preferable that the slope face 101 has a more flexible structure.
Therefore, according to the present embodiment, the cutout 104 is
provided at the position where the slope face 101 is included so
that the area of the slope face 101 is easily bent. According to
the present embodiment, the cutout 104 is a through-hole.
[0045] FIG. 5 is a perspective view of the boss. The boss 133,
illustrated in FIG. 5, is provided on the back surface of the
recessed portion 131 in the plate portion 130. The boss 133
protrudes toward the substrate 14. Specifically, the boss 133
protrudes in the thickness direction of the first inner cover 13 at
the position where the boss 133 is provided. Furthermore, the boss
133 includes the screw hole 103. As described above, the screw hole
103 is a through-hole that passes through the recessed portion 131.
Furthermore, the periphery of the boss 133 is raised toward the
substrate 14 due to a slope face 105. The slope face 105 is at the
opposite side of the slope face 101 of the recessed portion 131.
Moreover, the cutout 104 is provided at the position where the
slope face 105 is included. The boss 133 is an example of a
"protruding portion".
[0046] Next, with reference to FIGS. 6 and 7, an explanation is
given of an operation in a case where the pressing force is applied
to the tablet-type PC according to the present embodiment. FIG. 6
is an enlarged view of the boss section, taken along the line A-A'
in FIG. 1A. Furthermore, FIG. 7 is an enlarged view of the boss
section, taken along the line A-A' in FIG. 1A in a state where the
pressing force is applied. For easy understanding, the recessed
portion 131 is illustrated by indicating the area of the recessed
portion 131 in FIGS. 6 and 7.
[0047] As illustrated in FIG. 6, a screw 200 passes through the
second inner cover 15 and the substrate 14 from the side of the
external cover 16 so as to be engaged with the screw hole 103 that
is provided in the boss 133 of the first inner cover 13. Here, for
easy illustration, the screw 200 and the screw hole 103 are
depicted with their screw threads omitted from FIG. 6. In
actuality, a state is such that the screw threads of the screw 200
and the screw hole 103 are engaged and are in contact with one
another. Furthermore, as FIG. 6 is an enlarged view, the first
inner cover 13 and the plate portion 130 become one; however, for
easy understanding, the reference numeral of each of them is
depicted.
[0048] The first inner cover 13 and the second inner cover 15 are
fastened due to the engagement between the screw 200 and the screw
hole 103. Furthermore, the substrate 14 is fixed such that it is
sandwiched between the boss 133 and the second inner cover 15.
[0049] In the above state, on the front surface of the plate
portion 130 of the first inner cover 13, i.e., the surface that is
opposed to the liquid crystal unit 12, the recessed portion 131 is
recessed in a direction toward the back surface. Specifically, the
plane that is on the same level as the front surface of the first
inner cover 13 is indicated by a two-dot chain line S, and the
recessed portion 131 is recessed toward the substrate 14 from the
two-dot chain line S as illustrated in FIG. 6. Furthermore, the
entire front surface of the plate portion 130 has a gap with the
liquid crystal unit 12, and the gap with the liquid crystal unit 12
is increased as the recessed portion 131 is recessed.
[0050] In the above state, for example, if a pressing force P is
applied to the area of the external cover 16, which corresponds to
the screw 200, toward the liquid crystal unit 12, the area of the
slope face 101 of the recessed portion 131 is largely bent and is
moved closer to the liquid crystal unit 12, as it is more flexible
due to the cutout 104 than the other areas. In addition, the plate
portion 130 of the first inner cover 13 is pressed toward the
liquid crystal unit 12, and the front surface of the plate portion
130 is moved toward the liquid crystal unit 12, whereby the state
is obtained as in FIG. 7.
[0051] In this state, the plate portion 130 of the first inner
cover 13 abuts the liquid crystal unit 12 at positions Q1 and Q2
that are the edge portions of the recessed portion 131. Here, as
FIG. 7 is a cross-sectional view, only the two contact areas, i.e.,
the positions Q1 and Q2, are illustrated; however, in actuality,
the entire outer edge of the recessed portion 131 abuts the liquid
crystal unit 12.
[0052] In this way, if the pressing force P is applied, the force
is distributed to the outer edge of the recessed portion 131;
therefore, the force for pressing the liquid crystal unit 12 is
reduced. Thus, it is possible to reduce the occurrence of failure
of the liquid crystal unit 12.
[0053] Here, according to the present embodiment, the mechanism is
provided to release the applied force by bending the slope face 101
of the recessed portion 131; however, if the applied force is
sufficiently released by receiving it at the outer edge of the
recessed portion 131, the slope face 101 may be less bent.
[0054] Furthermore, according to the present embodiment, to release
the force effectively, the boss 133 and the recessed portion 131
are provided such that the position at the opposite side of the
boss 133 is in the center of the recessed portion 131. However, in
a case where the efficiency of releasing the force may be low,
e.g., the liquid crystal unit 12 is unlikely to be damaged, it is
appropriate as long as the position at the opposite side of the
boss 133 is included in the recessed portion 131. In this case, it
is preferable that the positional relationship between the boss 133
and the recessed portion 131 is determined in consideration of how
the force applied to the boss 133 is applied to the outer edge of
the recessed portion 131 and the strength of the liquid crystal
unit 12.
[0055] Furthermore, it is preferable that the size of the recessed
portion 131 is larger in consideration of more distribution of the
force; however, if the size of the recessed portion 131 is larger,
there is a high possibility that the opposite side of the boss 133
is brought into contact with the liquid crystal unit 12 due to the
bend of the recessed portion 131. Furthermore, as the recessed
portion 131 is bent to release the applied force, it is preferable
that the recessed portion 131 is easily bent; however, if it has a
structure to be largely bent, there is a high possibility that the
opposite side of the boss 133 is brought into contact with the
liquid crystal unit 12 due to the bend. Moreover, the deepness of
the recess of the recessed portion 131 is limited by the size of
the tablet-type PC 1. Therefore, it is preferable that the size and
the flexibility of the recessed portion 131 are determined on the
basis of the deepness of the recess of the recessed portion 131,
the degree of force that may be tolerated by the liquid crystal
unit 12, or the like.
[0056] Furthermore, the first inner cover 13 according to the
present embodiment uses the cutout 104 that extends in the slope
direction of the slope face 101; however, the cutout may have any
shape as long as it makes the slope face 101 easily bend. For
example, as in FIG. 8A, it is possible to provide the cutout 104
that extends in a direction perpendicular to the slope direction of
the slope face 101. Furthermore, it is possible that the cutout 104
has a different shape of a through-hole. For example, as in FIG.
8B, it is possible to provide, as the cutout 104, a groove 141 that
extends in a direction perpendicular to the slope direction of the
slope face 101. FIGS. 8A and 8B are diagrams that illustrate other
examples of the cutout.
[0057] Furthermore, according to the present embodiment, the slope
face 101 is easily bent by using the cutout 104; however, another
structure may be used as long as it is a structure that makes the
slope face 101 easily bend. For example, an area of the slope face
101 is made thin so that it is easily bent.
[0058] Furthermore, according to the present embodiment, the slope
face 101 is easily bent; however, it is appropriate as long as the
force is released by bending the recessed portion 131 and, for
example, the bottom face 102 may be easily bent.
[0059] Furthermore, in the present embodiment, an explanation is
given of a case where the outer edge of the recessed portion 131 is
circular to improve the force distribution efficiency; however, the
shape of the recess may be a different shape and it may be, for
example, a triangle or a square. Furthermore, it is preferable that
a vertex is curved so as to prevent a strong force from being
applied to a specific area.
[0060] Furthermore, in the present embodiment, an explanation is
given by using, as the protruding portion, the boss 133 that is
engaged with the screw 200 that includes the screw hole. However,
there is no limitation on the boss 133 as long as it is a
protruding portion with which, if the force is applied in a
direction from the external cover 16 toward the liquid crystal unit
12 at a position other than the vicinity of the outer edge of the
liquid crystal unit 12, the force is applied in a concentrated
manner and the opposite side is likely to be in contact with the
liquid crystal unit 12. For instance, it may be a support rod that
supports between the first inner cover 13 and the second inner
cover 15. In such a case, a recessed portion may be provided on the
surface of the first inner cover 13, opposing to the liquid crystal
unit 12, in the area that includes the position at the opposite
side of the support rod.
[0061] Furthermore, in the present embodiment, an explanation is
given by using, for example, the tablet-type PC 1; however, this is
not a limitation on the target to be used. If a product is
structured such that there is a possibility that, if it is provided
on the back surface of the liquid crystal unit 12 and if force is
applied, it is brought into contact with the back surface of the
liquid crystal unit 12, the cover that includes the protruding
portion and the recessed portion, described in the present
embodiment, is used for the product, whereby the same advantage may
be obtained.
[0062] As described above, in the chassis according to the present
embodiment, if the force toward the back surface of the liquid
crystal unit is applied to the boss section, the force applied to
the boss is distributed to the outer edge of the recessed portion,
whereby it is possible to reduce the force that is applied to the
liquid crystal unit, and it is possible to prevent the occurrence
of failure of the liquid crystal unit due to the contact with the
protruding portion.
[0063] According to an aspect of the chassis and the electronic
device that are disclosed in the present application, an advantage
is produced such that it is possible to prevent the occurrence of
failure of the liquid crystal unit due to the contact with the
boss.
[0064] All examples and conditional language recited herein are
intended for pedagogical purposes of aiding the reader in
understanding the invention and the concepts contributed by the
inventor to further the art, and are not to be construed as
limitations to such specifically recited examples and conditions,
nor does the organization of such examples in the specification
relate to a showing of the superiority and inferiority of the
invention. Although the embodiment of the present invention has
been described in detail, it should be understood that the various
changes, substitutions, and alterations could be made hereto
without departing from the spirit and scope of the invention.
* * * * *